Furnace.



Patented Deo. 10, 12H8.

2 SHEETS-SHEET I.

A APPLICATION HLEDAUGl 17. maw

l. METESSER.

FURNACE.

APPLICATION FILED MIG. I7. 191e.

2 SHEETS-SHEET 2.

Patented Dec. 10 1918 @gw/M @d/wow w m m Cfr LENIS METESSER, OF NEW'ORLEANS, LOUSANA.

FUR-NACE.

Specification of Letters Yatent.

i'arented Dec. ii, 121518.

Application filed August 17, 1916. Serial No. 115,438.

To all wlw/n, t may conce/ra.'

Be it known that l, Lewis Miirnssnii, a citizen of the United States,residing` at New Orleans, in the parish of Orleans and State ofLouisiana, have invented certain new and useful improvements inFurnaces, of which the following is a specification.

This invention relates to improvements in furnaces and particularlyinetallui'gical furnaves wherein metals or their alloys are heated,melted, puddled, annealed or otherwise treated and the invention alsorelates to the constincti'oinof kilns for nodulizing, vit rifying andthe like. A

in iinyw'rtaiu object of this invention is to produce a li'uri'iace ofthe character described, in which the degree of heat and the characterand extent of chemical action therein can be effectively controlled andboth the heat 4and chemical action maintained s'nbstair tially uniformthroughout the ti'eati'i'ientof the material therein.

il A further object of the invention is to provide a furnace ofincreased efficiency and economy of operation.

Other objects and advantages ofthe in- Vention will be apparent dui-ingthe course of the following,- description.

ln the accompanying` drawing" forming a `part of this specification andin which like numerals are employed to designate like parts throughoutthe saine,

Figure l is a transverse vertical sectional View taken on line 1--1 ofFig. 3 and looking in the direction of the arrows,

Fig. 2 is a similar view taken on line 2 2 Y 'of Fig. 3 looking in thedirection of the arrows, and,

Fig. 3 is a longitudinal vertical section taken approximately on line3-f3 of Fig. 1. ln the drawings, wherein for the purpose of illustrationis shown a preferred embodiment of my invention, the numeral 5'designates the shell 0r body portion of the furnace, in the forwardportion of which is formed a combustion chamber 6, as shown.-

This combustion chamber inaly be of any required area and form, and isadapted to receive any suitable mechanically or manually operatedmechanism for handling fuel, the saine being of adequate capacity forthe kind and quality of fuel t0 be burned. This combustion chamber, inthe type of furnace illustr-ated, is provided in its lower portion withan. incline, rate 7, comprising spaced sets of twyers 8, which arehollow and have laterally extending out-let openings 9, discharging intothe chamber 6, and inlet. openings or chambers, as is well lrnown. Thesetwyers are arranged upon a bed plate T. The inlet openings or chambersof the twyers coi,.- niunicate with a gas supply passage 10, closed atits top and opened al' its bottom, as shown.

llhe fuel, such as coal., coke or the like, is fed into the combustionchamber ti by nieans of feeding mechanism 9 whirh inay be of any wellknown or preferred construction, scrif'ing to force the fuel between thesets of twyers S, such fuelpassinginto the coinbiistion chamber 6,wherein it is subjected to the action of heat and of gases(.lischarging` from the openings 9 of the twyers.

Arranged within the lower portion of the shell 5 an open top, watercooled and water sealed ash pit 1i., formed by the walls 13, 1a, and 15.The 'all 15 may be formed of masonry or inetal plates, as may be bestsuited to the conditions of each case.

rlhe open top water cooled and water sealed ash pit 12 is provided nearits bottom with a Water seal 15, having an outlet 16, for the mechanicalor manual removal of ashes. vThis outlet may be forined through thefront, rear or side walls of the construction. The mechanical cleaningmay be accomplished without disturbing the water seal of the ash pit 12.This prevents materially changing the character of combustion or degreeof temperature in the combustion chamber 6 or effecting furnacecapacity. The partially consumed fuel in the open upper part of the ashvpit 12 forms a tire siii'- face' for finishing the gasificationA orcoinplete combustion of the fuel in the tire box and the closed lowerpart of the receptacle receives the incoinbustible partsof the fuel,after discharge into the same, by any suit able means, provided for thepurpose. The water seal is provided with drain and overflow pipes oropenings 17 and 17, ais-shown.

Arranged upon the back wall ofthe coinbustion chamber G is a water backor iron plate 12', behind which are disposed pipes 14: `receiving waterfrom means to be de! scribed. The provision of the'iron plate 12prevents the adhering of clinkers and the provision of the water coolingpipes 111 preserves the plate as is well understood in the therethroughand is discharged into the ash pit 1G through pipe 15a.

The nlnneral 17 designates a wind box, preferably closed upon all sidesand bottom and opened at its top, for free communication with the gaspassage.

Arranged near the rear or inner end of the wind box 17 and under theoverhanging edge of the bed plate 7', as shown, is a perforated pipe 18,discharglng water upon rear end of the wind box to externally cool it.The perforated pipe 18 also serves to supply water into the ash pit,introducing the water heneath the hot ineombustible mass, for supplying,by disintegration, oxygen to the rear part of the combustion chamber, tocomplete the gasification of such parts of combustible material as maybeautomatically discharged yover the open top of the ash pit, and for sup-20' plying water to the seal.

The pipe 18 is connected with the pipe 1l by a pipe 20. l'Vater is fedinto the pipe 18 through a pipe 2l, having a valve 22 connected therein.This pipe has connection with any suitable source of water supply. Thepipe 21 has connection with a transverse pipe 23, for the externalcooling of the frame of the cleaning door 24.

The combustion chamber 6 has an outlet openingl 25, for the passage ofgases and products of combustion into the usual heating and treatingchamber, containing the metals or ores or the like to be treated. Thedoor 24 leads into the combustion chamber 6, near and above the ash-pit12, whereby access may be had thereto, for cleaning.

The numeral 26 designates an air supply pipe, having branches 27 and 28.Each branch is equipped with a quick acting slide valve 29, forcontrolling the passage of air therethrough. The branch 28 dischargesinto the wind box 17, as shown, for the partial gasification or completecombustion of the fuel, and supplying-,the same air pressure at alltimes to the twyers. The branch 27 discharges into a preferably verticalair heating passage or conduit 30, formed in the bridge wall 31. Theopening 30 extends upwardly and discharges into a horizontal passage 32,formed in such wall, and provided with outlet ports'or openings 33discharging into the ore treating chamber. The function of thisconstruction is to provide preheated air, for secondary combustion, andit is to be understood that such preheated air may be supplied from theheating chamber of4 any desired form and capacity of prehcater required.The discharge i of the air through the branches 27 and 28 is regulatedby the slide valves 29.

It will be understood that, by the provision of a single air supply pipe26 and the branches 27 and 28 connected therewith as shown,- the air isnormally supplied for fuel combustion through the twyers 8 and forsecondary combustion through the preheating conduits 30, at the samepressure and that by manipulation of the valves 29 this pressure may beregulated as desired.

The numeral 34 designates a steam supply pipe, connected with a duplexvalve structure 35. This valve structure is connected with a pipe 36adapted to discharge to the atmosphere. Connected with the valvestructure is a pipe 37 discharging into the wind box 17. The valvestructure comprises quick acting valves 38 and 39, the valve 38 servingto close the pipe 36 While thevalve 39 opens the pipe 37, and viceversa. rfhe valves 38 .and 39 are simultaneously operated by a lever i0,pivoted at l1. The duplex valve system consists of two duplicate uuickopening valves, with central fitting, which central fitting has twovertical openings to the valves and two horizontal openings forconnection with the supply pipe, and fulcrum of lever. The neededpressure for creating the draft which pressure may be steam, exhaust orlive, or various gases, or combination of two or more gases is suppliedthrough the duplex valve structure to produce the desired character ofcombustion and degree of heat, within the limit of the fuel used, andchemical mixtures within the combustion chamber, to perform the requiredwork, such as heating metals for rolling, forging, and other forms offabrication, melting, converting, and annealing, carbonizing or roastinores in furnaces, and nodulizing and vitriying in kilns variouscombination and products.

In the operation of the valve system shown, steam or other chemicalgases enter the supply pipe, and pass down through valve 39, when lever40 is out, into the Wind box 17, or up through valve 38 to theatmosphere or waste, when the lever is in reverse position. One movementof lever simultaneously operates' both valves 38 andA 39. The pipe 34and associated elements are provided to utilize the exhaust' steam froman engine, by supplying the same to the furnace without substantiallyimpairing the operation of the engine. If the exhaust from the engine issubstantially retarded, the operation of such engine is seriouslyimpaired. A Isingle valve to alternately place one branch pipe into andout `of communication with 'and'from the steam supply pipe could not beoperated sufficiently quickly, to prevent: substantial back pressure intheengine. It is essential that there be two valves 38 and 39, which aresimultaneously set into action, one closing and one opening, so thattheir operation is simultaneously completed.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatvarious changes in the shape, size, and arrangement of parts may bereramene sorted to without departing from the spirit of the invention orthe scope of the subjcined claims, l

Having thus described my invent-iony I claim:

1. In a furnace of the character described, a, shell having therein acombustion chainber, an open top water sealed ash pit arranged therein,a` fuelv support arranged within the combustion chamber substantiallywholly upon one side of the ash pit and' having,l one end thereofprojectingv across the open top of the ash pit for a.

slight distance for providing a protecting member, a Wind box disposedunder the fue! support and having one side thereof serving a portion ofone wall of the ash pit,

and a perforated pipe disposed under the protectingr member in proximityto the Outer wail of the wind box to supply Water thereto and to the ashpit. y

Z n a furnace of the character described, a shell having,` therein acombustion chamber, a. fuel support therein having air passagesextending therethrough, an-opeii-top water sealed ash pit arranged atone side of the fuel support and adapted to receive consumed andpartially consumed fuel thereim a Wind box disposed under the fuelsupport and adapted to supply'. to the air passages of the fuelsupport,'v one side of said Wind box forming a portionofpne sideoff'fthe ash pit, and means tow discharge Water upon the said exposedside of the Wind box for externally cooling it and to supply water toform the seal for the ash pit.

In testimony whereof I aiix my signature in presence of two Witnesses.

LEWIS METESSER. Witnesses L. M. CRESSMAN, MARY B. HALPIN.

